17. has NFC

18. has a touch screen

You can operate the device easily, by pressing the screen with your fingers.

Apple Watch Series 4

76% have it

19. Is compatible with iOS

It is compatible with a range of iOS devices such as iPhones, iPads and the iPod Touch.

Apple Watch Series 4

72% have it

20. Tracks your sleep

It can track your sleep, such as how long you sleep for and the quality.

Apple Watch Series 4

35% have it

21. Has a stopwatch

With a stopwatch you can time yourself.

Apple Watch Series 4

57% have it

22. Integrates with social networks

It allows you to share information to popular social networks.

Apple Watch Series 4

43% have it

23. has voice commands

You can use your voice to control key functions of the device and you can easily access your device without pushing any button.

Apple Watch Series 4

63% have it

24. Has call control

The device alerts you to incoming calls on your smartphone, and allows you extra control such as muting or rejecting the call.

Apple Watch Series 4

73% have it

25. Has a barometer

This measures barometric air pressure. It can predict weather changes, for example a sudden drop in air pressure could mean a storm is coming. When calibrated correctly it can be used to determine altitude, which helps GPS devices to lock on quicker and with greater accuracy.